For being an amateur Lego enthusiast, Jason Allemann, of JK Brickworks, has created some masterfully-engineered toys made from nothing but plastic bricks. However, his partner, Kristal Dubois, might have just outdone him with a flying bat sculpture featuring some amazingly articulated wings.

The bat build was inspired by a recent trip to Australia, but as mesmerizing as it is to watch the animated sculpture’s wings expand and contract as they flap, it’s even cooler to hear how it actually works. Luckily, Jason delves into the inner workings of the model, revealing some masterful Lego Technics engineering that might even outdo Mother Nature.